Invalid WU question

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Profile Dave C
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Message 1491872 - Posted: 20 Mar 2014, 15:59:33 UTC

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.
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Message 1491892 - Posted: 20 Mar 2014, 16:29:15 UTC - in response to Message 1491872.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.


Probably your result didn`t match the signals from your wingmen.
Its nothing on your side.


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Profile Dave C
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Message 1491896 - Posted: 20 Mar 2014, 16:32:13 UTC - in response to Message 1491892.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.


Probably your result didn`t match the signals from your wingmen.
Its nothing on your side.


Oh well, it is what it is, thanks for the input
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Profile William
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Message 1491898 - Posted: 20 Mar 2014, 16:32:43 UTC - in response to Message 1491847.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.

made link clickable

looks like stderr is truncated. Known issue. Don't worry about it, just bad luck.
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Message 1491901 - Posted: 20 Mar 2014, 16:38:33 UTC

The two valid crunchers show the exact same counts.
Spike count: 28
Autocorr count: 0
Pulse count: 0
Triplet count: 0
Gaussian count: 2

You show
Gaussian: peak=3.484241,
Spike: peak=24.21002,

The odd invalid once in a wile is nothing to worry about. If one gets them constantly though there is a problem.
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Message 1491905 - Posted: 20 Mar 2014, 16:40:05 UTC - in response to Message 1491898.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.

made link clickable

looks like stderr is truncated. Known issue. Don't worry about it, just bad luck.


Not really.

Old OpenCL apps had different signal finding on -9s.


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Profile William
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Message 1491913 - Posted: 20 Mar 2014, 16:46:51 UTC

he shows 2 gaussian and a few spikes before stderr bit the dust.

If it's signal ordering it is still a known issues, that may have been addressed since. And it's bad luck to have so few signals coincide that you get an invalid out of it.

Anyway, same over all message - nothing to worry about. The odd invalid just happens. If you start to get lots of inconclusives and subsequent invalids on a host, then that needs attention and possibly some TLC.
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Profile Dave C
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Message 1491915 - Posted: 20 Mar 2014, 16:49:19 UTC - in response to Message 1491901.  

The two valid crunchers show the exact same counts.
Spike count: 28
Autocorr count: 0
Pulse count: 0
Triplet count: 0
Gaussian count: 2

You show
Gaussian: peak=3.484241,
Spike: peak=24.21002,

The odd invalid once in a wile is nothing to worry about. If one gets them constantly though there is a problem.


Well I hope it doesn't happen to often, it just seemed a bit odd to me.
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Message 1491919 - Posted: 20 Mar 2014, 16:56:37 UTC - in response to Message 1491915.  


Well I hope it doesn't happen to often, it just seemed a bit odd to me.

I once got 200 errors in one day from WUs that were never sent. The servers hated me that day. Nothing to worry about as there was no penalty or real harm. It just looked bad until they cleared.
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Message 1491926 - Posted: 20 Mar 2014, 17:03:57 UTC - in response to Message 1491905.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.

made link clickable

looks like stderr is truncated. Known issue. Don't worry about it, just bad luck.


Not really.

Old OpenCL apps had different signal finding on -9s.

Yes, really. The stderr doesn't get to the line containing "result_overflow".
                                                                   Joe
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Message 1491934 - Posted: 20 Mar 2014, 17:10:11 UTC - in response to Message 1491898.  

http://setiathome.berkeley.edu/workunit.php?wuid=1451643950

I don't understand why I got an invalid on this wu when the other two crunchers got credit. And it's the only one sense I restarted crunching again.

made link clickable

looks like stderr is truncated. Known issue. Don't worry about it, just bad luck.

This looks like a problem which we discussed recently at considerable length in Strange Invalid MB Overflow tasks with truncated Stderr outputs.... It meets all the criteria: an overflow task, but not all the 30 signals are spikes. And RAMA's task isn't showing the vital "SETI@Home Informational message -9 result_overflow", without which the v7 validator won't pass a result without autocorrs.

There are three possible solutions to this problem, none of them quick or easy, and none under the direct control of an individual user like RAMA.

1) We could - collectively - try to work out why the operating system (Windows only, I think?) is writing truncated files - more frequently these days, it appears to be, but only on some machines. If we could identify the cause, we could perhaps identify remedial measures under the user's control (exclude folders from virus scanning? Turn off folder contents indexing? Just examples of the sort of thing which can introduce a delay, and which can be mitigated - not saying either example is directly implicated here).

2) Wait until the developers have developed, and the testers have tested, replacement stock applications which can be deployed centrally for all users.

3) Persuade Eric (or rather, help Eric to find the time) to implement the changes to the validator logic that Joe suggested, so that the informational message isn't so critical. But I suspect that can't happen unless we all club together to buy Eric an infinite supply of....

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Profile Siran d'Vel'nahr
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Message 1492604 - Posted: 21 Mar 2014, 9:33:29 UTC

Greetings guys,

I'm gonna chime in here for a bit. I just updated to V7.2.42 3 days ago. I check my stats virtually every day. I saw that I had one invalid yesterday. Today, I have 2. To my knowledge I had never seen a WU go invalid. These are my 2 invalids:

1.) http://setiathome.berkeley.edu/result.php?resultid=3439726615
2.) http://setiathome.berkeley.edu/result.php?resultid=3439726622

Just some more food for thought. :)

Keep on BOINCing...! :)
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Message boards : Number crunching : Invalid WU question


 
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